Plant Protection Department, Faculty of Agriculture, Al- Azhar University. | ||||
| Journal of Plant Protection and Pathology | ||||
| Article 11, Volume 5, Issue 1, January 2014, Page 109-118 PDF (379.58 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jppp.2014.87876 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| A. E. Hussein; M K El-Ansari; A. A. A. Zahra | ||||
| Plant Protection Department, Faculty of Agriculture, Al- Azhar University. | ||||
| Abstract | ||||
| Population fluctuation of the red palm weevil, Rhynchophorus ferrugineus (RPW)was studied using the aggregation pheromone traps, during2012-2013 in Rashid district. Fortnightly catches of the RPW showed that RPW existed all over the year and there are four peaks during the tested year 2012-2013, the mean of the total captured adults at dults/ trap) recorded at 15th Sep. 2013 it is the last peak. The results showed that there was non-significant positive correlation between mean daily temperature and the population abundance of RPW, while there was a significant negative correlation between the means of daily relative humidity and the population abundance of the RPW adults during the tested year. The numbers of females attracted to aggregation pheromone traps were generally twice as that of males. The sex ratios of male to female were 33.4: 66.6 during the tested year 2012/2013. The results showed that tthe beginning of December 2012 was 6.40 adults/trap then it decreased gradually to record the lowest average of captured RPW adults (2.30 adults/trap) at 15th Jan. 2013, and it fluctuated to record four peaks the first (17.40 adults/trap) recorded at 15th April 2013, the second peak (12.80 adults/trap) recorded at 30th May 2013, the third and the highest peak (20.60 adults/trap) recorded at 15th July and the fourth peak (10.40 ahe captured population of weevils in Eastern direction was the highest followed by South, center, and the least captured numbers recorded in West and North directions. | ||||
| Keywords | ||||
| Population fluctuation; Red palm weevil; aggregation pheromone; weather factors | ||||
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